IN A RECENT ISSUE of this journal, Fry (4) described "a readability formula that saves time." The panel immediately below gives a method of assessing readability which is even quicker—and so simple that one statistician who glanced at an earlier version of this paper thought that it was a "put on," a fake. Although this system, SMOG Grading, is laughably simple, it is in fact more valid than pr...

The heat, ultraviolet and rihoflavin-sensitized visible inactivations of taka-amylase A are strongly inhibited by the presence of its substrate. The stabilization of the secondary structure of enzyme protein by the conformation change due to the formation of enzyme-substrate and -product complexes is responsible for the protection of enzyme from the heat inactivation. The photoinactivations are...

Experiments were conducted to investigate the effects of photo-oxidation on organic aerosol (OA) emissions from flaming and smoldering hardand soft-wood fires under plume-like conditions. This was done by exposing the dilute emissions from a small wood stove to UV light in a smog chamber and measuring the gasand particle-phase pollutant concentrations with a suite of instruments including a Pro...